- For the city in Azerbaijan, see Tərtər.
Terter (Bulgarian: Тертер), also Terterids or Terterovtsi (Тертеровци), was a Bulgarian noble and royal house that ruled the Second Bulgarian Empire between 1280 and 1292, as well as between 1300 and 1323.
The Terterids were originally of Cuman origin (i.e. from the western branch of the Turkic Kipchaks), according to Plamen Pavlov they were a branch of the Cuman noble dynasty of Terteroba who had settled in Bulgaria as part of the second wave of Cuman migration, coming from the Kingdom of Hungary after 1241. The Terteroba clan had ruled the steppe proto-state of Cumania in the late 11th century, as well as in the mid-13th century under Köten.
The earliest representatives of the dynasty in Bulgaria were the despotēs Aldimir (Eltimir) and his older brother George Terter who was crowned emperor of Bulgaria as George I of Bulgaria (1280-1292), marrying the Bulgarian Maria. After his reign, Bulgaria was under the de facto control of the Golden Horde, with Nogai Khan nominating the next ruler, Smilets (1292-1298), who was of another noble family, and was briefly succeeded by his son Ivan II (1298-1299). In 1299-1300, Bulgaria was controlled by the Mongol Chaka. Chaka was deposed by George Terter's son, Theodore Svetoslav of Bulgaria (1300-1321), beginning the second reign of the Terterids, which also spanned that of his son, George II of Bulgaria.
- Aldimir (Eltimir)
- Ivan Dragushin
- George I of Bulgaria (ruled 1280-1292)
- Vásáry, István. Cumans and Tatars: Oriental Military in the Pre-Ottoman Balkans, 1185-1365. Cambridge University Press. ISBN 0-521-83756-1.
- "Cuman". Britannica Online Encyclopedia. Retrieved 2008-08-25.
- Павлов, Пламен (2005). ""Авантюристът-скит" Алдимир и Теодор Светослав". Бунтари и авантюристи в средновековна България (in Bulgarian). Варна: LiterNet.